Five years later

Just as 2019 was ending, I was able to run 5k in under 20 minutes at Actic Kiruna. Today, I decided to beat that time at Gymmet, capitalizing on the last few weeks of low-volume running. To my surprise, I had a much better feeling than five years ago, possibly due to all those Parkruns. Though my heart rate peaked at 178 bpm, my average heart rate was just 160 bpm, making me think that I could run even faster. Still, I know that treadmills are one thing and road racing another, so I am unsure if I can replicate this outside the gym.